The S.S. Drainpipe (S02E47)

Toy boats are disappearing from the city at the same time jewelry stores are being mysteriously robbed. While testing one of Gadget's inventions, the Rangers stumble onto the connection: Rat Capone is using the boats to sail through the sewers and do the jewelry heists from the inside. Chip is captured by Capone's hoods, and when the others try to resue him, they too are taken prisoner. At last only Dale is left, who looks to his cartoon hero the Red Badger Of Courage for advice. With help from the Red Badger and his own "imaginative", Dale foils Rat Capone's scheme and is looked upon as a hero by the other Rangers. (iTunes)